CN111769694A - Rotary rectifying device of brushless synchronous generator and mounting method - Google Patents
Rotary rectifying device of brushless synchronous generator and mounting method Download PDFInfo
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- CN111769694A CN111769694A CN202010757959.5A CN202010757959A CN111769694A CN 111769694 A CN111769694 A CN 111769694A CN 202010757959 A CN202010757959 A CN 202010757959A CN 111769694 A CN111769694 A CN 111769694A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
- H02K11/042—Rectifiers associated with rotating parts, e.g. rotor cores or rotary shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
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Abstract
The invention discloses a rotary rectifying device of a brushless synchronous generator and an installation method thereof, wherein the rotary rectifying device is installed on the end face of the non-driving end of a rotor shaft. The common anode rectifying module and the common cathode rectifying module are respectively fixed on the other end of the radiator in an up-down symmetrical mode, and two ends of the pressure-sensitive module are respectively fixed on one end of the common anode rectifying module and one end of the common cathode rectifying module. The installation method of the invention comprises the following steps: 1) installing two rectifier modules, 2) installing a radiator on the end of the rotor shaft, and 3) connecting each wiring terminal and installing a pressure-sensitive module. The invention solves the problem of difficult installation and maintenance of the existing rotating rectifier module, and improves the power density and the installation efficiency.
Description
Technical Field
The invention relates to a rectifying device of a generator, in particular to a rectifying device of a synchronous generator and an installation method, and belongs to the technical field of motors.
Background
The brushless synchronous generator is widely applied to the fields of electric power and new energy, and is used as a power supply of various devices with different power and voltage grades. The excitation system mainly comprises a main generator, an exciter and an excitation system, wherein the exciter is a rotating armature type generator, and the main generator is a rotating field type generator. When the rotor rotates, the exciter rotor generates alternating current, and in order to provide direct current for the main machine rotor to generate a rotating magnetic field, the current must be rectified by a rotating rectifying device which rotates coaxially. Therefore, the rotating commutation device is a key component of the brushless synchronous generator. The existing rotating rectifying device is arranged between a main machine rotor and an exciter rotor, and 6 rectifying modules respectively provided with 1 diode are uniformly distributed and fixed on the circumferential surface of a hub of a rotor shaft through bolts penetrating through a lead ring. The existing rotating rectifying device has the following main defects:
1. difficulty in installation and maintenance: when the rotary rectifier module breaks down and needs to be replaced, the operation is carried out through a ventilation window on the base, and the difficulty degree is directly related to the size of the base of the generator; for a generator with a compact structure, the whole generator rotor must be drawn out first to be replaced, time and labor are wasted, and the maintenance efficiency is low.
2. Fragile generator: when the brushless synchronous generator operates at a high speed, the insulation of a stator winding can be damaged when a mounting bolt of a rotating rectifying device between a main machine rotor and an exciter rotor falls off due to fatigue or other reasons, and serious equipment accidents of burning the brushless synchronous generator can be caused when the stator winding is serious.
3. The power density is low: the rotating rectifier module is installed in the generator base, so that the power density of the rotating rectifier module is low.
4. The life of the rectifier module is reduced: the temperature of the rectifier module installed in the base is higher than the ambient temperature, so that the rectifier module is difficult to dissipate heat and reduce the temperature, and the service life of the rectifier module is shortened.
Disclosure of Invention
The invention aims to provide a rotary rectifying device and an installation method of a brushless synchronous generator, which are used for solving the problems of difficult installation and maintenance, low power density, short service life and the like of the conventional rotary rectifying module and further improving the reliability of the brushless synchronous generator.
The invention is realized by the following technical scheme:
a brushless synchronous generator rotary rectifying device is arranged on the end face of a non-driving end of a rotor shaft and comprises a gasket, a radiator, a common anode rectifying module, a common cathode rectifying module, a pressure-sensitive module and three connecting sheets, wherein the gasket is fixedly positioned on an end face boss of the non-driving end of the rotor shaft through a gasket counter bore, the gasket is embedded and positioned in one end of the radiator, a plurality of radiating fins at the other end of the radiator face the end face of the non-driving end of the rotor shaft and are fixedly arranged on the end face of the non-driving end of the rotor shaft through a plurality of radiator connecting screws; the common anode rectifying module and the common cathode rectifying module are respectively fixed on the end face of the other end of the radiator in an up-down symmetrical mode, and two ends of the pressure-sensitive module are respectively fixed on one end of the common anode rectifying module and one end of the common cathode rectifying module.
The object of the invention is further achieved by the following technical measures.
Furthermore, one end of the radiator is radially provided with a plurality of radiating fins arranged in parallel, and the centers of the plurality of radiating fins arranged in parallel are provided with radiator stepped holes; one end of the gasket is abutted against the stepped hole of the radiator; the other end of the radiator is a circular plate, and the cross section of the radiating fin is a trapezoid with the bottom thickness larger than the outer edge thickness.
Furthermore, the planar shapes of the common anode rectification module and the common cathode rectification module are both fan-shaped, and the common anode rectification module and the common cathode rectification module are respectively fixed on the corresponding heat conduction substrates; the planar shape of the heat-conducting substrate is also fan-shaped, and the arc-shaped expansion length of the heat-conducting substrate is respectively greater than the arc-shaped expansion length of the common anode rectification module and the arc-shaped expansion length of the common cathode rectification module; a plurality of binding posts which are arranged at intervals in a fan shape are respectively and vertically fixed on the common anode rectifying module and the common cathode rectifying module; and two ends of the heat-conducting substrate at the bottom of the common anode rectifying module and two ends of the heat-conducting substrate at the bottom of the common cathode rectifying module are respectively fixed on the other end of the radiator through rectifying module mounting screws.
Furthermore, both ends of the pressure-sensitive module are respectively and fixedly connected with one end of the connecting substrate, and the other end of the connecting substrate is respectively and fixedly connected with the binding post at one end of the common anode rectification module and the binding post at the corresponding position at one end of the common cathode rectification module.
Furthermore, the middle part of a connecting sheet made of copper material protrudes outwards, and the two ends of the connecting sheet are respectively connected with homopolar binding posts at the U end, the V end and the W end of the common anode rectifying module and the common cathode rectifying module.
Further, the cylindrical protective cover covers the three connecting pieces, the common anode rectifying module, the common cathode rectifying module, the pressure sensitive module and the radiator.
A method for installing a rotating rectifying device of a brushless synchronous generator comprises the following steps:
1) preparation before installation
Three-phase excitation cable leads and 2 main rotor cable leads led out from a rotor shaft hole are respectively coated with an insulating protective layer and made into corresponding U-end wiring terminals, V-end wiring terminals and W-end wiring terminals, and 2 main rotor cable leads are made into corresponding F1-end wiring terminals and F2-end wiring terminals;
respectively coating a layer of silicone grease with the thickness of 1mm on the surface of the heat-conducting substrate;
half-lapping 2 layers of little-glue mica on the convex part in the middle of the connecting sheet, half-lapping 1 layer of polyester tape, and sleeving an insulating sleeve;
2) mounting two rectifier modules
Respectively vertically fixing a common anode rectification module and a common cathode rectification module on corresponding heat-conducting substrates, fixing two ends of the heat-conducting substrate at the bottom of the common anode rectification module and two ends of the heat-conducting substrate at the bottom of the common cathode rectification module on a circular plate at the other end of the radiator respectively through rectification module mounting screws from top to bottom, respectively sleeving disc spring gaskets between the rectification module mounting screws and the circular plate at the other end of the radiator, and screwing the rectification module mounting screws by using a torque wrench to ensure that the common anode rectification module and the common cathode rectification module are respectively fixed on the circular plate at the other end of the radiator in an up-and-down symmetrical manner;
3) mounting heat sinks to the ends of the rotor shaft
Inserting a gasket into the radiator stepped hole, so that one end of the gasket is positioned in the radiator stepped hole; then positioning a gasket counter bore at the other end of the gasket on an end face boss of the non-driving end of the rotor shaft; the radiator connecting screws respectively penetrate through a circular plate and a gasket of the radiator in sequence and then are screwed tightly, so that the gasket, the radiator, the common anode rectifier module and the common cathode rectifier module are respectively fixed on the end face of the non-driving end of the rotor shaft; simultaneously, sequentially penetrating a U-end connecting terminal, a V-end connecting terminal and a W-end connecting terminal which are led out from a rotor shaft hole, and sequentially penetrating an F1-end connecting terminal and an F2-end connecting terminal through a central hole of a gasket and a stepped hole of a radiator;
4) connecting terminals and mounting pressure-sensitive modules
Firstly, respectively sleeving the ends of a U-end wiring terminal, a V-end wiring terminal and a W-end wiring terminal on corresponding wiring terminals of a common anode rectification module, respectively sleeving the ends of connecting substrates at two ends of a pressure-sensitive module on the wiring terminals at the F1 end of the common anode rectification module and the F2 end of the common cathode rectification module, respectively sleeving the ends of an F1-end wiring terminal and the F2-end wiring terminal on the corresponding wiring terminals at the F1 end and the F2 end, respectively pressing one end of a connecting sheet on the U-end wiring terminal, the V-end wiring terminal and the W-end wiring terminal of the common anode rectification module, respectively pressing the other end of the connecting sheet on the wiring terminals with the same polarity of the common cathode rectification module, respectively sleeving disc spring gaskets on the wiring terminals, respectively screwing nuts on the corresponding wiring terminal ends, respectively, and respectively pressing the nuts on the common anode rectification module and the common cathode rectification module through the disc spring gaskets, the U-end connecting terminal, the V-end connecting terminal and the W-end connecting terminal on the common anode rectifying module are respectively and fixedly short-circuited with the corresponding wiring terminals with the same polarity on the common cathode rectifying module through connecting sheets; the F1 end connecting terminal of the common anode rectifying module and one end of the connecting substrate of the pressure-sensitive module are fixed on the common anode rectifying module, and the F2 end connecting terminal of the common cathode rectifying module and the other end of the connecting substrate of the pressure-sensitive module are fixed on the common cathode rectifying module; and finally, fixing the protective cover outside the three connecting sheets, the common anode rectifying module, the common cathode rectifying module, the pressure-sensitive module and the radiator to complete the installation of the rotary rectifying device of the brushless synchronous generator.
The rotary rectifying device of the brushless synchronous generator is arranged on the end face of the non-driving end of the rotor shaft, and the rectifying module and the pressure-sensitive module can be conveniently taken down for maintenance or replacement only by taking down the protective cover. The invention integrates 6 rectifier modules uniformly fixed on the circumferential surface of the hub of the rotor shaft into a common anode rectifier module and a common cathode rectifier module which are respectively provided with 3 diodes and fixed on the upper part and the lower part of the end surface of the radiator, and has good integrity and high reliability. The common anode rectifier module and the common cathode rectifier module are additionally provided with the radiators, so that the heat dissipation effect of the rectifier module is greatly improved, and the service life is prolonged. When the brushless synchronous generator meets special working conditions, the rectifier module can be damaged due to the generation of overhigh peak voltage. In order to absorb the peak voltage, a voltage-sensitive module is additionally arranged between the direct current sides of the output of the rectifier module. In order to obtain better stability, the common anode rectification module and the common cathode rectification module both adopt a compression joint type connection structure to jointly form a three-phase full-bridge rectification circuit, and a stable and reliable direct-current excitation power supply is provided for a main rotor of the brushless synchronous generator. The invention solves the problem of difficult installation and maintenance of the existing rotary rectifier module, reduces the installation difficulty and improves the power density and the installation efficiency.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of the present invention mounted on the end of a rotor shaft of a brushless synchronous generator;
FIG. 2 is an enlarged view of section I of FIG. 1;
fig. 3 is an enlarged view of a direction a of fig. 2.
Detailed Description
The invention will be further explained below with reference to the accompanying drawings and an embodiment of a 50kW, 400V brushless synchronous generator.
The brushless synchronous generator of the present embodiment is mounted as shown in fig. 1 and 2, the main rotor 20 is fixed to the middle of the rotor shaft 10, the exciter rotor 30 is fixed to the right end of the rotor shaft 10, both ends of the rotor shaft 10 are respectively supported on bearing seats 50 outside both ends of the housing 40, and the left end of the rotor shaft 10 is connected to the prime mover. The embodiment is installed on the end face of the non-driving end, namely the right end, of the rotor shaft 10, and is close to the bearing seat 50, and the embodiment comprises a gasket 1, a radiator 2, a common anode rectifier module 3, a common cathode rectifier module 4, a pressure-sensitive module 5 and three connecting pieces 6, wherein the gasket 1 is positioned and fixed on an end face boss 101 of the non-driving end of the rotor shaft 10 through a gasket counter bore 11 at the right end, a plurality of radiating fins 21 arranged in parallel in the radial direction at the left end of the radiator 2 face the non-driving end of the rotor shaft 10, a radiator stepped hole 211 is formed in the center of the plurality of radiating fins 21 arranged in parallel, the gasket 1 is embedded and positioned in the radiator 2, the right end of the gasket abuts against the radiator stepped hole. The right end of the radiator 2 is a circular plate 22, the cross section of the radiating fin 21 is a trapezoid with the bottom thickness larger than the outer edge thickness, compared with the existing radiating fin with the rectangular cross section, the radiating fin 21 with the trapezoid cross section increases the radiating area, and has a better radiating effect after rotation.
As shown in fig. 3, the planar shapes of the common anode rectifier module 3 and the common cathode rectifier module 4 are fan-shaped, and the common anode rectifier module 3 and the common cathode rectifier module 4 are respectively fixed on the corresponding heat conductive substrates 31. The planar shape of the heat conducting substrate 31 is also fan-shaped, and the arc-shaped extension length of the heat conducting substrate 31 is respectively greater than the arc-shaped extension length of the common anode rectifier module 3 and the arc-shaped extension length of the common cathode rectifier module 4, so that the common anode rectifier module 3 and the common cathode rectifier module 4 are conveniently fixed on the end face of the right end of the radiator 2 through the heat conducting substrate 31 at the bottom of each heat conducting substrate. 4 binding posts 32 arranged at intervals in a fan shape are vertically fixed on the common anode rectifier module 3 and the common cathode rectifier module 4 respectively. The 3 binding posts 32 arranged at intervals on the left side among the 4 binding posts 32 are respectively used for connecting a U-end wiring terminal 321, a V-end wiring terminal 322 and a W-end wiring terminal 323, the common anode rectifier module 3 and the common cathode rectifier module 4 are symmetrically arranged up and down, and two ends of a heat conduction substrate 31 at the bottom of the common anode rectifier module 3 and two ends of a heat conduction substrate 31 at the bottom of the common cathode rectifier module 4 are respectively fixed on a circular plate 23 at the right end of the radiator 2 through rectifier module mounting screws 33.
Two ends of the pressure-sensitive module 5 are respectively and fixedly connected with one end of a connection substrate 51, and the other end of the connection substrate 51 is respectively and fixedly connected with a binding post 32 at the right end of the common anode rectification module 3 and a binding post 32 at the corresponding position at the right end of the common cathode rectification module 4.
The middle part of the connecting sheet 6 made of copper material is convex, and the two ends of the connecting sheet 6 are respectively connected with the wiring terminals 32 with the same polarity at the U end, the V end and the W end of the common anode rectifier module 3 and the common cathode rectifier module 4.
A cylindrical protective cover 7 is fixed on one side of the adjacent bearing seat 50 and covers three connecting pieces 6, the common anode rectifier module 3, the common cathode rectifier module 4, the pressure sensitive module 5 and the radiator 2, thereby preventing serious accidents in case of flying to hurt people due to the breakage of screws or radiating fins 21.
The installation method of the rotating rectifying device of the brushless synchronous generator comprises the following steps:
1) preparation before installation
The three-phase excitation cable lead wires and 2 main rotor cable lead wires led out from the rotor shaft hole 102 are respectively coated with insulating protective layers and made into corresponding U-terminal wiring terminals 321, V-terminal wiring terminals 322 and W-terminal wiring terminals 323, and the 2 main rotor cable lead wires are made into corresponding F1 terminal wiring terminals 501 and F2 terminal wiring terminals 502.
The surface of the heat conducting substrate 31 is coated with a layer of silicone grease with the thickness of 1 mm.
The convex part in the middle of the connecting sheet 6 is half-wrapped with 2 layers of little-glue mica, then half-wrapped with 1 layer of terylene tape, and sleeved with an insulating sleeve.
2) Mounting two rectifier modules
The common anode rectification module 3 and the common cathode rectification module 4 are respectively and vertically fixed on the corresponding heat conduction substrate 31, then two ends of the heat conduction substrate 31 at the bottom of the common anode rectification module 3 and two ends of the heat conduction substrate 31 at the bottom of the common cathode rectification module 4 are respectively and vertically fixed on the circular plate 23 at the right end of the radiator 2 through rectification module mounting screws 33, disc spring gaskets 331 are respectively sleeved between the rectification module mounting screws 33 and the circular plate 23, the rectification module mounting screws 33 are screwed by a torque wrench, so that the common anode rectification module 3 and the common cathode rectification module 4 are respectively and vertically and symmetrically fixed on the circular plate 23 at the right end of the radiator 2.
3) Mounting the heat sink 2 to the end of the rotor shaft 10
Inserting the gasket 1 into the radiator stepped hole 23 so that the right end of the gasket 1 is positioned in the radiator stepped hole 23; the washer counterbore 11 at the left end of the washer 1 is then positioned over the end boss 101 at the non-drive end of the rotor shaft 10. The radiator connecting screw 23 respectively penetrates through a circular plate of the radiator and a gasket in sequence and then is screwed tightly, so that the gasket 1, the radiator 2, the common anode rectifier module 3 and the common cathode rectifier module 4 are respectively fixed on the end face of the non-driving end of the rotor shaft 101; while the U-terminal wire terminal 321, the V-terminal wire terminal 322, and the W-terminal wire terminal 323, the F1-terminal wire terminal 501, and the F2-terminal wire terminal 502 drawn out from the rotor shaft hole 101 are passed through the washer center hole 11 and the heat sink stepped hole 23 in this order.
4) Connecting terminals and mounting pressure-sensitive modules 5
The ends of the U-end wiring terminal 321, the V-end wiring terminal 322 and the W-end wiring terminal 323 are firstly respectively sleeved on the corresponding wiring terminal 32 of the common anode rectification module 3, the ends of the connection substrates 51 at the two ends of the pressure-sensitive module 5 are respectively sleeved on the wiring terminal 32 at the F1 end of the common anode rectification module 3 and the wiring terminal 32 at the F2 end of the common cathode rectification module 4, the ends of the F1-end wiring terminal 501 and the F2-end wiring terminal 502 are respectively sleeved on the corresponding wiring terminal at the F1 end and the wiring terminal at the F2 end, one end of the connection sheet 6 is respectively pressed on the U-end wiring terminal 321, the V-end wiring terminal 322 and the W-end wiring terminal 323 of the common anode rectification module 3, and the other end is respectively pressed on the wiring terminal 32 with the same polarity of the common cathode rectification module 4. Then, disc spring gaskets 331 are respectively sleeved on the binding posts 32, nuts 34 are respectively screwed on the ends of the corresponding binding posts 32, the nuts 34 are respectively pressed on the common anode rectification module 3 and the common cathode rectification module 4 through the disc spring gaskets 331, and the disc spring gaskets 331 enable the U-end wiring terminal 321, the V-end wiring terminal 322 and the W-end wiring terminal 323 on the common anode rectification module 3 to be fixedly connected with the corresponding binding posts 32 with the same polarity on the common cathode rectification module 4 through the connecting sheets 6. The disc spring gasket 331 generates a large pre-tightening force when being compressed and deformed, plays a role in anti-loosening and stopping, and ensures that each connecting terminal is tightly connected with the corresponding connecting terminal. The F1 terminal 91 of the common anode rectifier module 3 and one end of the connection substrate 51 of the voltage sensitive module 5 are fixed to the common anode rectifier module 3, and the F2 terminal 502 of the common cathode rectifier module 4 and the other end of the connection substrate 51 of the voltage sensitive module 5 are fixed to the common cathode rectifier module 4. And finally, fixing a protective cover 7 covering the three connecting pieces 6, the common anode rectifying module 3, the common cathode rectifying module 4, the pressure sensitive module 5 and the radiator 2 on the outer side of a bearing seat 50 at the right end of the rotor shaft 10 to complete the installation of the rotary rectifying device of the brushless synchronous generator.
The embodiment enables the voltage drop of the brushless synchronous generator 400V to be only 23.07%, meets the requirement that the voltage drop is not more than 25%, and is convenient to popularize and apply.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (7)
1. A brushless synchronous generator rotary rectifying device is characterized in that the brushless synchronous generator rotary rectifying device is installed on the end face of the non-driving end of a rotor shaft and comprises a gasket, a radiator, a common anode rectifying module, a common cathode rectifying module, a pressure-sensitive module and three connecting sheets, wherein the gasket is fixedly positioned on an end face boss of the non-driving end of the rotor shaft through a gasket counter bore, one end of the radiator contains the gasket, a plurality of radiating fins at the other end of the radiator face the end face of the non-driving end of the rotor shaft and are fixed on the end face of the non-driving end of the rotor shaft through a plurality of radiator connecting screws; the common anode rectifying module and the common cathode rectifying module are respectively fixed on the other end of the radiator in an up-down symmetrical mode, and two ends of the pressure-sensitive module are respectively fixed on one end of the common anode rectifying module and one end of the common cathode rectifying module.
2. The rotating rectifying device of the brushless synchronous generator as claimed in claim 1, wherein one end of the heat sink is radially provided with a plurality of parallel fins, and the centers of the plurality of parallel fins are provided with stepped holes of the heat sink; one end of the gasket is abutted against the stepped hole of the radiator; the other end of the radiator is of a circular plate structure, and the cross section of each radiating fin is of a trapezoid shape, wherein the bottom thickness of each radiating fin is larger than the outer edge thickness of each radiating fin.
3. The rotating rectifying device of brushless synchronous generator as claimed in claim 1, wherein the planar shapes of the common anode rectifying module and the common cathode rectifying module are fan-shaped, and the common anode rectifying module and the common cathode rectifying module are respectively fixed on the respective corresponding heat conducting substrates; the planar shape of the heat-conducting substrate is also fan-shaped, and the arc-shaped expansion length of the heat-conducting substrate is respectively greater than the arc-shaped expansion length of the common anode rectification module and the arc-shaped expansion length of the common cathode rectification module; a plurality of binding posts which are arranged at intervals in a fan shape are respectively and vertically fixed on the common anode rectifying module and the common cathode rectifying module; and two ends of the heat-conducting substrate at the bottom of the common anode rectifying module and two ends of the heat-conducting substrate at the bottom of the common cathode rectifying module are respectively fixed on the other end of the radiator through rectifying module mounting screws.
4. The rotating rectifying device of brushless synchronous generator as claimed in claim 1, wherein the two ends of the voltage-sensitive module are fixedly connected to one end of the connection substrate, and the other end of the connection substrate is fixedly connected to the terminal at one end of the common anode rectifying module and the terminal at the corresponding position at one end of the common cathode rectifying module.
5. The rotating rectifying device of the brushless synchronous generator as claimed in claim 1, wherein the connecting piece made of copper material protrudes outward in the middle, and both ends of the connecting piece are respectively connected to the U end, the V end and the W end of the common anode rectifying module and the common cathode rectifying module with the same polarity.
6. The rotary rectifier device of claim 1, wherein the cylindrical protective cover covers the three connecting pieces, the common anode rectifier module, the common cathode rectifier module, the pressure sensitive module and the heat sink.
7. A method of mounting a rotating commutator of a brushless synchronous generator as defined in claim 1, comprising the steps of:
1) preparation before installation
Three-phase excitation cable leads and 2 main rotor cable leads led out from a rotor shaft hole are respectively coated with an insulating protective layer and made into corresponding U-end wiring terminals, V-end wiring terminals and W-end wiring terminals, and 2 main rotor cable leads are made into corresponding F1-end wiring terminals and F2-end wiring terminals;
respectively coating a layer of silicone grease with the thickness of 1mm on the surface of the heat-conducting substrate;
half-lapping 2 layers of little-glue mica on the convex part in the middle of the connecting sheet, half-lapping 1 layer of polyester tape, and sleeving an insulating sleeve;
mounting two rectifier modules
Respectively vertically fixing a common anode rectification module and a common cathode rectification module on corresponding heat-conducting substrates, fixing two ends of the heat-conducting substrate at the bottom of the common anode rectification module and two ends of the heat-conducting substrate at the bottom of the common cathode rectification module on a circular plate at the other end of the radiator respectively through rectification module mounting screws from top to bottom, respectively sleeving disc spring gaskets between the rectification module mounting screws and the circular plate at the other end of the radiator, and screwing the rectification module mounting screws by using a torque wrench to ensure that the common anode rectification module and the common cathode rectification module are respectively fixed on the circular plate at the other end of the radiator in an up-and-down symmetrical manner;
mounting heat sinks to the ends of the rotor shaft
Inserting a gasket into the radiator stepped hole, so that one end of the gasket is positioned in the radiator stepped hole; then positioning a gasket counter bore at the other end of the gasket on an end face boss of the non-driving end of the rotor shaft; the radiator connecting screws respectively penetrate through a circular plate and a gasket of the radiator in sequence and then are screwed tightly, so that the gasket, the radiator, the common anode rectifier module and the common cathode rectifier module are respectively fixed on the end face of the non-driving end of the rotor shaft; simultaneously, sequentially passing a U-end connecting terminal, a V-end connecting terminal and a W-end connecting terminal which are led out from an axial hole of the rotor shaft, and sequentially passing an F1-end connecting terminal and an F2-end connecting terminal through a central hole of a gasket and a stepped hole of a radiator;
4) connecting terminals and mounting pressure-sensitive modules
Firstly, respectively sleeving the ends of a U-end wiring terminal, a V-end wiring terminal and a W-end wiring terminal on corresponding wiring terminals of a common anode rectification module, respectively sleeving the ends of connecting substrates at two ends of a pressure-sensitive module on the wiring terminals at the F1 end of the common anode rectification module and the F2 end of the common cathode rectification module, respectively sleeving the ends of an F1-end wiring terminal and the F2-end wiring terminal on the corresponding wiring terminals at the F1 end and the F2 end, respectively pressing one end of a connecting sheet on the U-end wiring terminal, the V-end wiring terminal and the W-end wiring terminal of the common anode rectification module, respectively pressing the other end of the connecting sheet on the wiring terminals with the same polarity of the common cathode rectification module, respectively sleeving disc spring gaskets on the wiring terminals, respectively screwing nuts on the corresponding wiring terminal ends, respectively, and respectively pressing the nuts on the common anode rectification module and the common cathode rectification module through the disc spring gaskets, the U-end connecting wire terminal, the V-end connecting wire terminal and the W-end connecting wire terminal on the common anode rectifying module are respectively and fixedly connected with the corresponding wiring terminals with the same polarity on the common cathode rectifying module through connecting sheets; the F1 end connecting terminal of the common anode rectifying module and one end of the connecting substrate of the pressure-sensitive module are fixed on the common anode rectifying module, and the F2 end connecting terminal of the common cathode rectifying module and the other end of the connecting substrate of the pressure-sensitive module are fixed on the common cathode rectifying module; and finally, fixing the protective cover outside the three connecting sheets, the common anode rectifying module, the common cathode rectifying module, the pressure-sensitive module and the radiator to complete the installation of the rotary rectifying device of the brushless synchronous generator.
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| WO2008126214A1 (en) * | 2007-03-28 | 2008-10-23 | Mitsubishi Electric Corporation | Ac generator for vehicle |
| US20100117466A1 (en) * | 2006-12-22 | 2010-05-13 | Olivier Gas | Device for rectifying the current of an electric rotary machine and rotary electric machine including such device |
| CN203933418U (en) * | 2014-05-28 | 2014-11-05 | 北京铭瑞欣科控制技术有限公司 | A kind of no-brush synchronous generator rotating rectifier dish |
| CN204376645U (en) * | 2015-02-27 | 2015-06-03 | 北京前锋科技有限公司 | A kind of high rotating speed large-sized asynchronous starting brushless excitation rotating rectifier |
| CN206313614U (en) * | 2016-12-12 | 2017-07-07 | 石家庄丹创电气有限公司 | Brushless synchronous motor rotating rectifier dish |
| CN212649306U (en) * | 2020-07-31 | 2021-03-02 | 镇江中船现代发电设备有限公司 | Rotary rectifying device of brushless synchronous generator |
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| US20100117466A1 (en) * | 2006-12-22 | 2010-05-13 | Olivier Gas | Device for rectifying the current of an electric rotary machine and rotary electric machine including such device |
| WO2008126214A1 (en) * | 2007-03-28 | 2008-10-23 | Mitsubishi Electric Corporation | Ac generator for vehicle |
| CN203933418U (en) * | 2014-05-28 | 2014-11-05 | 北京铭瑞欣科控制技术有限公司 | A kind of no-brush synchronous generator rotating rectifier dish |
| CN204376645U (en) * | 2015-02-27 | 2015-06-03 | 北京前锋科技有限公司 | A kind of high rotating speed large-sized asynchronous starting brushless excitation rotating rectifier |
| CN206313614U (en) * | 2016-12-12 | 2017-07-07 | 石家庄丹创电气有限公司 | Brushless synchronous motor rotating rectifier dish |
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